Crimping-machine



` (NOMOdeL) .zsneetsf-sheenl.

J. W. D. FIFI'ELD. C, Crimping Machine.

No. 229,989. f l Patented July 13, 1,880.

.- (No Model.) 2 sheets-sheen 2.

J. W. D. PIPIELD. f Crimping Machine. l No. 229,989. Patented July/13.118,30.

W'IYTNEE'EE; l INVENTDQE- Y l gofvw 'ZLQQSMMCA NITED STATES PATENT Ormes.

JOHN W. D. FIFIELD, OF NORTH BRO'OKFIELD, MASSACHUSETTS.

CRlMPlNG-IVIACHINE.

SPECIFICATION fOIming part 0f Letters Patent NO. 229,989, dated July 13, 1880.

Application mea May 17, leso. (No model.)

To all whom it may concern Be it known that I, JOHN W. D. FIFmLD, of North Brookfield, county of Worcester, State of Massachusetts, have invented an Improvement in Crimping-Machines, of which the following description, in connection with the accompanying drawings, is a specification.

This invention relates to mechanism for crimping the uppers of boots and shoes, and is an improvement on United States Patent No. 216,768, granted June 24, 1879.

In this present invention I have shown the wrinkle-rubbers as rollers which are rotated positively7 whereas in the patent referred to the rubbing` devices were reciprocated. I have also added to the jaws movable spring-held blocks to divide each jaw into two or more sections, thus making the jaw more effective in rubbing and stretching the vamp to theform. I have also combined with the pivoted jaws a vibrating brake or form-carrying lever operated by a crank.

Figure l represents, in side elevation, a crimping-machine showing my improvements; Fig. 2, a top view thereof; Fig. 3, afront-end View; Fig. 4, a detail of the inner face of one of the jaws, and Fig. 5 a section thereof on the line m m.

In the mechanism herein described the pivoted jaws p and their pivoted carrying-levers w are as in the patent referred to 5 but instead of adjusting the levers at their rear ends by means of a right and left handed screw, I employ springs c, placed between the said levers and fixed ears c, about headed screws b, fixed to the said ears and extended through holes in the levers, the said holes being of greater diameter than the s hanks of the screws and of less diameter than their heads. The screws may be turned to determine the distance of one from the other jaw.

Instead of the leveling-sprin gs 22 described in the said patent, I now provide the levers with lugs d, through which are looselyeX- tended headed adj usting-screws e, that at their inner ends are screwed into the jaws p, and about these screws, between the lugs and jaws, I place spiral springs f. These screws may be turned whenever necessary to adjust the pressure of the jaws.

The form It, of any usual or suitable shape,

instead of being made to slide vertically, is attached to or made part of a vibrating lever, i, pivoted on a fixed part of the frame A, and slotted as at l to receive a block, m, held by a crank-pin, u, of a disk, o, attached to the rotating shaft r, held in suitable standards B.

The rubbing devices t, to remove the wrinkles in the vamp being crimped, are shown as iiuted rollers positively rotated as the form is made to pass the vamp between the jaws. The shafts upon which these rubbers are secured are herein shown as provided with pulleys ce2, which, by bands b2, are driven from pulleys on shafts oz c3, connected by a crossbelt, cl2, the shaft o3 being rotated from the shaft rby a belt, c2, (shown onlyin dotted lines, Fig. 1.

The jaws are shown as provided with openings oontaining movable sections f2, one or more for each jaw, backed by or resting upon springs g2. The front of each movable section will normally project outward a very little beyond the face of the jaw, to thus divide, as it were, each jaw into yielding sections more or less in number, thus enabling all parts of the vamp, notwithstanding variation in its thickness, to be acted upon and be rubbed and iitted to the form on its passage between the jaws.

The sections f2 may be shaped as shown, or be round or rectangular.

The rotating wrinkle-rubbers shown operate more rapidly than do those in the patent referred to.

Instead of the devices shown by which to rotate the rubbing devices t, I may employ any other suitable devices.

By means of the crank-pin and slotted formcarryi-ng lever fi, located as described, I am enabled to move the lever slowly at or nearest its highest position to permit the vamp to be placed across the top ofthe jaws, and then to move it rapidly to pass the vamp between the jaws, discharge it below the jaws, and return. The movable sections aid in discharging the crimped vamp from the form when rising, if the vamp happens to adhere to it. The pins 2 serve as the pivots for the jaws.

I do not broadly claim one or more rollers held loosely in the jaws, as I am aware that such rollers have been employed; but such IOO 4. The pivoted levers w and their pivoted jaws, combined with the headed adjustingscrews, fixed with relation to the frame-work of the machine, extended loosely through the said levers, and the sprin gs a, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN W. D. FIFIELD.

Witnesses:

N. E. C. WHITNEY, G. W. GREGORY. 

